STD,
Glad I could help, and that I, for a change, was apparently right about how people would respond to you!
I've already given you my ideas on the other thread, and am also happy to see, many of them agree with the gang of pros here.
In terms of Aluminum vs. Stainless Steel: I vote for Stainless, but weight can get to be a serious issue on many rigs, so Aluminum still has a purpose. (Don't like it as well, but I have to concede it.)
Another area I'd add to that the others haven't yet mentioned is this: Talk to and listen to the Firefighters who use the rig instead of the Cheif (as others have already stated), BUT ALSO, talk to some fire apparatus mechanics who have worked on the rigs, and see what breaks frequently (shows flawed design) and what would make it easier/quicker to work on apparatus. This is a bigger issue than it gets credit for.
Send me an e-mail, and I'll give you some other specific ideas.